Warp beaming machine



w. v. BOYD ,236,486

WARP BEAMING MACHINE 2 Shee ts-Sheet 1 Original Filed April 6, 1939March 25, 1941.

INVENTOR BOYD March 25, 1941 WARP BEAMING MACHINE Original Filed April6, .1939 2 Sheets-Sheet 2 INVEN TUB AITORK 8 w. v. BOYD '2,236;486 1Patented Mar. 25, 1941 UNITED STATES I WARP BEAinNG MACHINE William V.Boyd, Cornwall, Ontario, Canada, as-

signor to Canadian Cottons Limited, Montreal,

Quebec, Canada Original application April 6, 1939, Serial No. 266,431.Divided and this application May 24,

1940, Serial No. 337,040

3 Claims.

This invention relates to improvements in warp beaming machines and hasfor its object to reduce the labor costs incident to operation of suchmachines.

The conventional warp beaming machine requires the constant attention ofan operator who must watch the warp closely and be prepared to stop themachine whenever necessary to remove leases or to remedy imperfectionsin 10 the warp such as broken ends or snarls which,

if permitted to pass unnoticed, give rise to various difiiculties anddelays which materially increase the cost of operation.

The present invention provides a warp beam- 15 ing machine equipped withautomatic controls for stopping the machine whenever a lease, broken endor snarl reaches a predetermined point in the travel of the warp fromthe tensioning rolls to the beam. This eliminates the 90 necessity ofkeeping a constant watch on the warp and enables a single operator totake care of several machines.

The present application is a division of my co-pending applicationSerial No. 266,431, filed April 6, 1939.

Proceeding now to a more detailed description reference will be had tothe accompanying drawings, in which Fig. 1 is a side elevation of a warpbeaming n machine equipped with the automatic controls forming thesubject matter of this invention.

Fig. 2 is an enlarged side elevation of a portion of the assemblyappearing in Fig. 1.

Fig. 3 is a plan View of the warp showing one of the conventional leasesemployed to assist in maintaining the warp ends in their correctrelationship. This View also shows a ieeler element extending upwardlybetween adjacent warp ends so as to be engaged and operated by thelease.

Fig. 4 is a detail view.

Fig. 5 is a wiring diagram.

Fig. 6 is a large detail of a feeler switch.

As shown in these drawings, the warp 5 is passed around tensioning rolls6 and then over guide rolls 1, 8 and 9 to the beam Ill. The beam isrotated by contact with driving drum I I which, in turn, is driven frommotor l2 through the agency of a conventional drive connectioncomprising pulley l3, belt [4, pulley 15, reduction 50 gearing I6 andfriction clutch H. The starting and stopping of driving drum II isefiected through the agency of the clutch operating lever I8 whichcarries part of clutch l1 and is intermediately pivoted to swing aboutthe pivotal axis 55 I9. One end of lever l8 carries the starting treadle20. The other end of lever I8 is pivoted at 2| to the lower end of avertically extending clutch releasing rod 22. When rod 22 is latched inthe elevated position shown in Figs. 1 and 2, clutch I1 is engaged tocomplete the drive connection between motor I-2 and beam driving drum H.When the latch mechanism holding rod 22 in its elevated position isreleased, said rod drops to a lower position and permits lever l8 torelease said clutch ll thereby stopping 10 drum II and beam I0.

In the present instance rod 22 is shown latched in its elevated positionby a latch mechanism comprising a rocker 24 intermediately pivoted to abracket 25 mounted on the machine frame 26. One end 24a of rocker 24 isengaged in a notch 21 provided in rod 22. The other end 24b of therocker is connected to frame 26 by a spring 28. When the machine is inoperation rocker 24 is held in a horizontal position by reason of thefact that the end 24b is engaged beneath a projection 29 carried by thearm 30 of a bell crank lever 3|. This lever 3| is pivoted to the machineframe at 32 and has its other arm 33 pivoted to the armature 34 of asolenoid 35. A spring 36, connected between rod 22 and the machine frame26 serves to pull said rod inwardly toward the engaging end of rocker24. When solenoid 35 is energized armature 34 is pulled down and swingslever 3| in a clockwise direction so that projection 29 of said lever isswung clear of the adjacent'end of the rocker. This frees the rocker forswinging movement in a counterclockwise direction about its pivot and.permits rod 22 to drop to its clutch releasingposition.

According to one feature of the present invention solenoid is energizedto permit rod 22 to drop to its clutch releasing position whenever oneof the leases A (Fig. 3) carried by warp 40 5 reaches a predeterminedpoint in the travel of the warp from the guide roll 8 to the warp rattle38. This is accomplished by the provision of.- an automatic feelerswitch generally indicated at 39 in Figs. 1 and 5. The movable contact39a of this switch is formed by the lower end of a feeler 40 which isintermediately pivoted at 4| to a suitable support 42. The upper portionof feeler 4|] extends upwardly between adjacent ends of the warp asshown in Fig. 3 so that it lies in the path of travel of the leases.Each time a lease is moved against the upper portion of the feeler thelatter swings about the pivot 4| so that the lower contact end 39aengages the cooperating stationary. switch contact 43 from which it isnormally spaced by means of spring 44. The closing of switch 39energizes solenoid so that armature 34 is pulled down to release thelatch holding the clutch releasing rod 22 in its elevated or clutchengaging position.

As shown in the wiring diagram (Fig. 5) the normally open switch 33 isconnected to the line wires 35 and 36 in series with solenoid 35.

When rod 22 drops to its clutch releasing position it serves to open anormally closed switch 4'! which is connected across the line wires .5and in series with the motor 43 of a fan 49. The opening of switch 4'!is accomplished through the agency of a switch operating lever 15 havingone end pivoted to a bracket 76 and the other end connected, bysupporting spring 56), to the upper end of rod 22. When lever 75 ipulled downwardly by rod 22 the lever projection 55a acts against theswitch member lla to open switch 4? against the resistance of a suitableswitch closing spring (not shown) contained in the switch casing.

From the foregoing it will be apparent that whenever alease carried bythe warp presses against the feeler 40 the beam l0 and fan 49 arebrought to rest. The operator, after removing the lease in the usualmanner, depresses the pedal 2!? to swing the clutch lever 18 back to itscutch engaging position. During this move ment of lever 18 rod 22 movesupwardly and is again secured in its elevated position by reengagementof the end 24a of rocker 24 in notch 21. During this resetting of rod 22spring 50 is raised to return the switch opening lever 75 .to itsoriginal position and thus permits rcclosing of switch ll.

The beam rattle 38 is suspended from a bracket 5| by means of the chain52 and bell crank lever 53. The beam rattle and its supporting bellcrank lever 53 normally occupy the position shown in full lines inFig. 1. In this posi tion of the parts it will be noted that arm 54 ofthe bell crank lies below a normally open switch 55 mounted on bracket5!. If there are any snarls in the warp as it approaches the beam rattle38 these snarls will engage and force the beam rattle from the full tothe dotted line position shown in Figs. 1 and 2. This movement of thebeam rattle causes the supporting bell crank 53 to assume the inclinedposition shown by dotted lines in Fig. 1 with the result that theshorter arm 55 of the bell crank is moved against and closes switch 55.Since switch 55 is connected in series with solenoid 35 as shown in Fig.5 it follows that the closure of this switch will energize the solenoidto release the rod 22 and stop the machine whenever the beam rattle isdisplaced to its dotted line position. When the operator has remediedthe condition resulting in this stoppage of the machine the beam rattle38 and its supporting bell crank 53 will resume their normal positionsand permit reopening of switch 55. v

It is also desirable to stop the machine when the warp is subjected toexcessive tension caused by knotting or catching of the warp strands atsome point in advance of the guide roll 7. To this end the roll 7 isjournalled in a slidably mounted frame 58 equipped with guide pins 59working in guide openings 69 provided in the machine frame 26. The endsof the pins remote from frame 58 are connected by a cross bar 6| whichcarries the movable contact 62 of a normally open switch 63. Springs 59aencircle the guide pins 59 and bear against cross bar iii to normallyhold the contact 62 separated from a cooperating stationary contact 64.When the tension on the warp exceeds a predetermined value, the roll 1and frame 58 are pulled to the right against the resistance of springs590 so that switch 63 is closed by engagement of the movable contact 62with the stationary contact 6 5. Since switch 63 is connected in seriewith solenoid 35 as shown in Fig. 5 it will be evident that the closureof this switch energizes the solenoid to permit the clutch releasing rod22 to rop to its clutch releasing position.

When it is desired to stop the machine independently of the automaticcontrols this i accomplished through the agency of a hand lever 67. Thislever is intermediately pivoted at 68 and is provided at its lower endwith an adjustable abutment When the upper end of lever: all is swung tothe right from the position shown in Figs. 1 and 2 the abutment 69engages and forces rod 22 to the left so that said rod is moved clear ofthe rocker Z4 and drops to its clutch releasing position.

A roller 13 secured to lever El below the pivot 66 is normally disposedin contact with a stationary roller "ll journalled in the machine frameThese rollers form part of a conventional hair pin stop motion thefunction of which is to release the rod 22 through the agency of lever6'! whenever one of the conventional warp riding pins 73 is permitted todrop between the rollers it and H by breakage of one of the warp ends.Since this type of hair pin stop motion is well known furtherdescription thereof is not considered necessary to an understanding ofthe present invention.

While I have described what I now consider to be the preferredembodiment of this invention it will be understood that variousmodifications may be resorted to within the scope and spirit of theinvention as defined by the appended claims.

Having thus described my invention, what I claim is:

1. In combination, a warp beaming machine, a

motor for driving said machine, a drive connection between said machineand motor, including a clutch and a normally elevated axially movableclutch releasing rod, the latter normally tending to drop to a clutchreleasing position, a

device to permit said rod to drop to its clutch releasing position, anormally open switch connected in series with said solenoid and a sourceof current so that the solenoid is energized by closure of said switch,and means actuated by the beam rattle of the warping machine for closingsaid switch whenever said rattle is displaced to a predeterminedabnormal position by snarls in the warp passing therethrough.

2. In combination, a warp beaming machine, a motor for driving saidmachine, a drive connection between said machine and motor comprising aclutch, a pivoted clutch actuating lever operatively connected to saidclutch, a vertically disposed axially movable clutch releasing rodhaving its lower ad secured to said lever, means for normally holdingsaid rod in an elevated clutch engaging position, said means comprisingan intermediately pivoted rocker member having one end fitted in a notchprovided in said rod, a solenoid operated latch normally disposed inrestraining engagement with the opposite end of the rocker member andnormally serving to hold said rocker member in a rod supportingposition, a normally open switch connected in series with the operatingsolenoid of said latch member and with a source of current so that thesolenoid is energized by closure of said switch to hold the latch memberin restraining engagement with said rock-er member, and means actuatedby the beam rattle of the warping machine for closing said switchwhenever said rattle is displaced to a predetermined abnormal positionby snarls in the warp passing therethrough, the arrangement being suchthat the closure of said switch energizes the solenoid to withdraw thelatch from holding engagement with said rocker member so that the latteris free to swing to a rod releasing position permitting the clutchreleasing rod to drop down from its normally elevated position to aclutch releasing position.

3. In combination, a war-p beaming machine, a motor for driving saidmachine, a drive connection between said machine and motor comprising aclutch, a pivoted clutch actuating lever operatively connected to saidclutch, a vertically disposed axially movable clutch releasing rodhaving its lower end secured to said lever, means for normally holdingsaid rod in an elevated clutch engaging position, said means comprisingan intermediately pivoted rocker member having one end fitted in a notchprovided in said rod, a solenoid operated latch normally disposed inrestraining engagement with the opposite end of the rocker member andnormally serving to hold said rocker member in a rod supportingposition, a normally open switch connected in series with the operatingsolenoid of said latch member and with a source of current so that thesolenoid is energized by closure of said switch to hold the latch memberin restraining engagement with said rocker member, and means actuated bythe warp for closing said switch when certain predetermined conditionsare established in the operation of the machine, the arrangement beingsuch that the closure of said switch energizes the solenoid to withdrawthe latch from holding engagement with said rocker member so that thelatter is free to swing to a rod releasing position permitting theclutch releasing rod to drop down from its normally elevated position toa clutch releasing position.

WILLIAM V. BOYD.

